This download contains special firmware that upgrades the controller bootloader (or "loader") in SNAP PAC R-series controllers.
Starting in April 2018, some R1, R1-FM, R1-B, and R2-series controllers include a new flash component. These units have a hardware revision date of April 2, 2018 (or newer) and require bootloader R6.2c (or higher).
For details, see Opto 22 KB article KB87213
See KB83929, Updating SNAP PAC Controllers to use microSDHC Cards
on the Opto 22 website for important information on using the loader with SNAP PAC controllers.